Self-locking fastener apparatus

Details Self-locking fastener apparatus Self-locking fastener apparatus

1988-06-24

1990-01-02

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

411324, 411433, 411935, F16B 3708, F16B 3936

Patent

active

048909645

ABSTRACT:
A threaded fastener apparatus that self-locks onto a threaded bolt only during the very last stage of threading and that provides a predetermined self-locking force that remains substantially constant despite multiple repeated uses. The fastener apparatus includes a nut carried loosely within a locking sleeve that is secured to a workpiece. Threading a bolt into the nut draws the nut's enlarged cylindrical rearward section into compressive engagement with the sleeve's smaller-sized cylindrical forward section, to deform the nut radially inwardly into locking engagement with the bolt. Longitudinal through-slots in the nut's rearward end facilitate the inward deformation.

REFERENCES:
patent: 1297725 (1919-03-01), Patton
patent: 1326598 (1919-12-01), Jaques, Jr.
patent: 2562376 (1951-07-01), Cragg et al.
patent: 2605805 (1952-08-01), Woodling
patent: 2742938 (1956-04-01), Neuschotz
patent: 2882948 (1959-04-01), Wallace

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